Definition of junk mail in English:

junk mail

Line breaks: junk mail

noun

[mass noun] informal
Unsolicited advertising or promotional material received through the post: she tossed the junk mail in the bin
More example sentences
  • Why is it legal to send junk mail via the post office, but if you send it by email it's suddenly illegal?
  • In that world, senders have to pay to send mail: Paper junk mail has to have postage.
  • Following an experiment to see just how much junk mail he received in a year, he produced a 70 lb mail mountain.

Definition of junk mail in:

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